html,
body,
div,
ul,
li,
h1,
h2,
h3,
h4,
h5,
h6,
p,
dl,
dt,
dd,
ol,
form,
input,
textarea,
th,
td,
select {
  margin: 0;
  padding: 0;
}

* {
  box-sizing: border-box;
}

html,body{
  width: 100%;
  height: 100%;
}

body{
  font-family: PingFangSC-Regular;
  background-size: 750px; 
}

a,
a:link,
a:visited,
a:hover,
a:active {
  text-decoration: none;
  color: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: normal;
}

ul,
ol {
  list-style: none;
}

img {
  border: none;
  vertical-align: middle;
}

input,
textarea,button {
  outline: none;
  border: none;
}

textarea {
  resize: none;
  overflow: auto;
}

.btn{
  height: 88px;
  font-size: 34px;
  color: #fff;
  width: 90%;
  background-color: @blue;
}